Co-processor only fine. But Symmetric & Offload not work.

Hello, I want to generate xeon phi workstation using intel MPI.

Thus, I've already set up xeon phi and run test code using below thread.

http://software.intel.com/en-us/articles/using-the-intel-mpi-library-on-...

However, MPI Offload model & Symmetric model is not working with this error message if I run below MPI task.

[root@localhost monte_carlo_simulation_code]# mpirun -n 2 -host mic0 /root/montecarlo_mic/montecarlo.mic

(I've compiled montecarlo.mic using mpiicc –mmic montecarlo.c -o montecarlo.mic Then, I send montecarlo.mic on mic0(/root/montecarlo) 

[mpiexec@montecarlo.mic] HYDU_getfullhostname (./utils/others/others.c:136): getaddrinfo error (hostname: montecarlo.mic, error: Name or service not known)

[mpiexec@montecarlo.mic] HYDU_sock_create_and_listen_portstr (./utils/sock/sock.c:999): unable to get local hostname

[mpiexec@montecarlo.mic] HYD_pmci_launch_procs (./pm/pmiserv/pmiserv_pmci.c:313): unable to create PMI port

[mpiexec@montecarlo.mic] main (./ui/mpich/mpiexec.c:877): process manager returned error launching processes

And my information of /etc/hosts is(host)

cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

172.31.1.1    mic0.local mic0

---------------------------------------------------------------------

cat /etc/hosts0(Coprocessor)

127.0.0.1    localhost.localdomain localhost

::1        localhost.localdomain localhost

172.31.1.254    host

172.31.1.1    mic0.local mic0

I've checked similar situation compared with me, And I've read below article

http://software.intel.com/en-us/forums/topic/500752

But I cannot resolve this problem. How do I ??

Thanks